1 week of commute riding

[sleepy hollow]

I have a problem, rode to work today bike ran great, all of a sudden its chugging threw no matter my speed, bike has roughly 300 mi, on it, checked the plug its a chocolate brown, carb is at factory setting w/ 20:1 mix, please help!

 

[2door]

It would help a lot if we knew what engine and carburetor you have.

Tom

 

[Drewd]

You are probably gunking up your engine running an unnecessary amount of oil in your engine. Please consider going to 40:1 oil ratio using Maxima 927.

 

[sleepy hollow]

The rear sprocket was loose. Its an 80cc ht running 20:1 with nt carb, b6hs plug, chocolate brown plug

 

[GearNut]

20:1 is too much oil, no matter if the engine is running good.

 

[sleepy hollow]

It works for me

 

[Bikeguy Joe]

I will say my signature applies in that case!

Could be that the 20:1 mix is the "magic" mix for the way your carb is set/altitude/ect.

 

[sleepy hollow]

It does 4 stroke when its cold but once it warms up it runs like a champ, top rpm ive hit is 8k i run consistent at 6600, wich is 30mph

 

[sleepy hollow]

Its a ht 80cc kit with 44t sprocket, nt carb with inverted aircleaner housing, mounted to a cranbrook, cruise around 25-30 max spead 38, im 6'5"@210lb, plus im a fabricator by trade so my mounts are custom but basic